Gold-dredge.



Pmmrnn un. 6. wos.

n" l o I 4 l5 ',f.,J.cLmur. aow mamon. APPUNTI" HLID IAL", H05.

. I flllaruq PATENTE!) HAR. 6, 1006.

H. J. CLARK. GOLD DREDGB. nruonncl nun nl. .-u. nos

PATIN'I'ED MAR. 6, 1906.

H. J, CLARK.

GOLD DREDGH.

APFLILATIMI THE iuvk'znI yam a nir-wann a vshaft: Fi 4. 'an elevation of one of theiie iioiiaci: emita. oi'- puiser. inaiu lpectttcntton of Letton Patent.

PATENT (HTFICQI').

cow-onstaan.

Patented Inch 6. 1006.

Anntlcnttol tiled Inch 20 1906. Serial No. 25),!70.

To ull whom il Duty rmqtfrn.:

lle it known that I. lloiiaci: J. (`i..\iiit. a citizen of the United States. residing at lloise, in the county of Adintateol Idaho. have iuf vented certain new und useful liu rovenients i in Gold-Dredge. 'ol which the fo lowing is a slm-ilication. reference heing had therein io I t ie ai eonipiin'ving drawings. u This invention relates toagold-dredge. and` parteularlv to iiu apparatus adapted for the `j reinoval'ol the liner niaterial carrying the gold value-t durin the dredging operation.

'l'lie invention nis for an oliiect to provide an improved construction ant arrangement of scoop or shovel provided with retictilations therein and connected with a suitable snct ion device. so that the water and line sand oi' material ams through the face of the eoop andare il'ellveretl separately troni the larger nniterial which niav lie d'uiiiped froni the scoop. A fiirilier ohjeet of the invention is to prol vide a novel construction and arrangement I of tht-driving nieehaliisni for maintaining the l-uctioupres.-aire upon the scoop and for'oscillating the latter in its working movement.

Utlier and further objects and advantages ol' the invention will he hereinafter set forth' and the novel features thereof defined hy thev appended claims.

n the drawings. Fi 'ure l is an elevation of the invention appliei to a dredge with part of the latter in section: Fig. L. a planthereof; Fig.y 3. a longitudinal section of the asseoihled hnhs of the yacoops forming the suctionscoops: Hg. a. ii central vertical section through Fig. lz AFi nti, a detail perspective of ilie stamp-huh wit i parts ia section: Fig. 'i'. an enlarged elevation of a scoop and adjacent i parts: lig. A. a similar view showing a iaoditied application oi the invention in which the scoop is adapted to discharge either at its rear or to he elevated for discharge into the dredge. and Fig. ti an elevation of a scoop adapted for operation as a plow.

lake lettera of vreferein e refer to like parta in the several figures of the drawings.

ie letter A denignates a hoat of any nuit a i e eharneter-for huitiinee, ii dredge or thitmat. as here shown-adapted to contain the necessary driving machinery for actuating the several parts. The' scoops B, which are lasseinhled to lorin the siictioii-shaft. as

shown in Fig. It. are pivotallvmounted at tlic -free end ol' at'nis A which extend piirallel with the aides of the dredge, as showuiu Fig. L. 'l'hese arnis are pivoted at their inner e endet upon shafts or studs .Valid are p rovided iipontheir outer faces,l with a segmental casingv A, forming a conducting-iuhe extendinglongitudinallyof the erin. liucli of these arios is provided with an inwafilly-projecting nozzle, one of `which comprises u Jet-nozzle, iis diowli at and the opposite one a siiclioii-iiozzle. as at A". and each ot' these nozzles is ex'teriorl'v threaded, as shown at A". into a threaded recess at one end of the terminal litilis of the scoops. ''liese scoops are adapted to travel in their partial rota-tion upon the threaded faces of tamales A' and Ah and the liuhs thereof are provided with an eece'ntricaily-disptised driving wheel or palley li* to secure the niaxiinuiii leverage iii the lifting travel of the scoop. 'llie suctionshaft is composed of an v desired iiuinher et' sections siniilar in construction. and each of which is provided with a .holtingdlaiige B.

j hetween which flanges a partition-plate B' is disposed to forni the side-walls of the scoop disposed between the same,l The linhs are also provided with a slot B. communicating with the space between the `solid rear wall B ofthe woop and the face-plate B". This wall is referahly segmental in shape and provii ed with a proper cutting edge li. while spaced therefrom 'is a lated face-plate Bh In adtipiin the lmachine for ilitteieiit classes of wor ltisofteii necessary to regulate the sizeaa' uiesh of these pei'fot'ations. and this niav he accoiiiplialied hv au adjustahle perforated lace-plate li", corres iondiiig in curvature to the plate B and he d in its adjusted positionl thereon h v any desired means-for instante, holtsli". It will he apiareut that when 'the'apertures iii the plates and li are-iii aliiienieiit the largest openin.' is secured, and u shifting of these plates re a perforated or reticu tive to each other controls the subsequent m0 rigid and liriii siilihort and connectionfor the ic plates tothe huh of the scoop.

4at D', for starting and stopping the niove- ;V 35

While the material may he drawn into the l llltli of the scoops liy titty desired suction, still it in desirahlc to provide also a pressure device lo retain tlie .auction-pi ie in primed 4 totnlllioti when uic .woop ia eevatcd from the water and the suction-pipe exposed to the atinosplien'. 'lliis is accomplished luy `uieanu ot' a mmsure-piunp t' of centrifugal or any desired character, which is adapted to force a coltiiiin of liquid through the pipe and flexihle conueetionC' and passage Ainto the jet Atcarried at one end of the lwuction- Y ripe. This iet maintains a colniiin of moving A iquid through the suction-pipe and itito the i nozzle A at the opposite laide therefrom, upon 4 which nozzle the suetionuuipt" operattw, through the pipeC and tlexihle connection L, with the assage A communicating with the nozzle. Il'lie material which cont ains t lie gold or other values is discharged from this suctionpuin iat C* and conveyed to any Imi-od place. he eecctitrictilly-disposed driving pulley# or wheeln Il for the scoops are conl nected with similar wheels Il hy naam ol heit or cahleal Il', an aliown in Figs. l aiu 2, v

-nud thigwheela l) at each .wide of the dredge L are carried upon a uitahle lhaft D'. which g may he driven in auvdcsircd niaiuicr .-for iuatance, hv inclina o a `di'iviiig-pulley ll thereon, w iich in geared hy a liclt ll with a 'iuiilar alley ll* upon a couutcr-aluift Il, l which iiiaft is provided with any iiuitahle construction of clutch mechanism, as shown nient of the parts. Power is'transintted vtoh this counter-shaft hy means of a hclt D", .extending from ii suitable pulley D upon the i' crank-shaft E of the engine. (Shown at 2'.) 'l'liiu #haft is alim provided with a halaiicel wheel E. while the engine is supplied from any suitable source of powerfor instance, a holler E. connected by a steam-pipe .E 5 therewith. The puiii s C and C are also: adapted to he driven roin the crank-shaft E hy means of pullevs-ll thereon and a belt E, i extending to a driving-pulley E upon the shaft of each of the pumps. These parts]E are duplicated u on each side of the nia: chine. It is also iiiund desirable under some l conditions to retain tlie dredge in fixed posi- 3 tion hy means of a holding-pile E" of any dewired construction-*tor instance,operated hy l a steam-cylinder E-or a cable. as shown at l E'". may e extended to a fixed point for the purpoiie of moving or maintaining the dredge I in any preferred or desired osition. nder some conditions of) operation during i the transportation of a dredge it is desirahle to raise the arms carrying the scoops to or above the waterlevel, and llor this inrpoae the name are connected hy means o eahlea l", extendin f over suitable' heariii v. u on standards and thence heueati heariu rollers F to drums l'", mounted upon a aha t F, which ia independent in its rotation frotn i is connected hy a crossed hclt cati he accomplished hy raining t these pulleva is connected hy n straight helt ti with ai riving-pullcv G upon the crankshaft ol' the engine, while the o iposite pnllev ii with a pulley G" upon this crank-shaft. lt will thus he seen that a movement of the clutches in the iropcr direction will canne a driving of the' ruina in eithcrdii'ection toraiae or lower the scoops through the connections jnat de- Ncrilied.

While one form of mechanism has heen described for the purpose of operating and driving the several parts.still it. in not. iut-ended or deaired tocouliuc the invention thereto, aaitis capable of operation hy different construetiona and arrangements of operating nicchaniain, that shown heing merely one forni thereof. l U

ln the form of the invention shown in Figs. I and 7 the hula: ari-'provided with two scoops ll atid ll', dioposed in opposite oaitiouiil no' that during au oscillation tliereo toward the right the acoop ll will recciveiniiterinl and remove the litter substances therefroimwliile during the return movement the saine action is secured hy means ol' the sooo H'. Under some conditions ofY use vit is desirable to raise the hir 'er material carried h the scoop which i oca not. paas into the hu i thereof and dc'poait the naine upon thel dredge and this lie scoops ilpoii their swinging arms into the position shown hy dotted lines in Fig. 8, where the 1 scoopv is oseillated, so as to discharge its contents into the trough ll'. At other times the scoop inav he duin )ed h rotatin it into the poaitioiishown hyi ottei linesin y ig.7,where the waste material will he deposited vat the rear of the scoop.

'In Fig. 9 a further 'modified application of the invention is shown in which the scoop is not oacillated, but acts as a. pluie/,the scoop ll hein f omitted therefrom and only the iicoop l' niicd under auch eonditiona.

ln the operation of the invention it will he seen that the liner material passes through the apertures in the scoop and is conducted by the suction device to a suitable point of discharge, while the eouraer material nia he immediately discharged from the scoop :y a pro ier oscillation thereof or raised, a found deairahle. 'l`hc coiiatruction embodying the pressure and suction punipii provides against thel entrance of air n the suction-pipe when the scoo is raised ahove the water-level and retains t iis pipe in proper primed condition for the most. etlicient. operation. The occentrically-inounted driving-wheels for the scoop PQM L. to I s ifi.;

' vg n i3. In o drodgo. n motion-pipo vompriaing n plurality ol hollow huhu `wvnrod togothor and om'h providvd with n radiull \'diapmod ,woop having n maso 'o thoroin vommut'ticating with ththu i. anulan nporturod wall.sup |mrtiug-nrmsfor #oid huhsprovidod with nozzh* port ions tlm-mind into tht` oppositt onda of tho hulls. oondm-Lng uwnns t'arriotl hy #uid urn to vommunivnto with said nozzlo,

l vivi' vommtmii'ntiog with the vondto'ting tin-mm l a auvtioo-huh oppormi in said row nml rguomtmivuthm with .-uid hout. o woop oirrtvd hy md huh, und w'i'ont'ru'uliv-diapowd mvam upon aid luth for osvillating said hl'lllp. l5.I ntountvd arms snpportvd ut on(` und thoroot', a sttt'tiott-huh l-npportod in said orma and vommuttirntiug with ntid hout, u swoop vnrt'iad h v aid huh. moons for ost'illutiug said npportinggvtnndnrds upon ontl und of tho lnmtmnd |mun.--nrriod hy said hoat. and passing m'or said `--tnndards for olovut ing Suid arma' aud tho .woop 'arrit-d tht-rohr'.v a

iti. In n drodggo, n suol ion-mopfpivitallymountvd armfor .mpport ing t ht' sumo. n vusing vnrt'iod hy ono fnvo ot' sind arms and vommtmivoting with thtI huh of anid avoop. o pri-sauro dovivo vomtmmioutim;r with soid rinsing nml with a nozzlo at om` ond of said luth. andu Inotion dovii'o oommunioating with thv o posito owing and tho opposito ond nl #nid lttlv t. t

A I7. ln o drvdgo. u `sui-t ion-svoop, pivotallvmotmtvd arms for supporting thv sumo,l pais- :Sngvswarrivd hy n#aid arms and communiiating with thel luth of said svoop, a pressurtl dalun drvdgv. a hoat strmturo, pivotztllysito ondaof ISaid huh, and std@ walls for sind l i l l Hugoa on rriod hy an id arma am providod with a noztzh` at om and of `uid huh, a aut-tion li-vivo vonuuunivating with .the oppositivnd of said luth, moans mountod upon said huh for oscillating the santo upon said arms, and drivinpy connections for oporat-ing said osi-illating moans.

IS. lu n drodwno suction-senop, pivot u||ymounted imm or supportin'g thtsauro, pn vommlmunt mg with tho luth of mid woop, n prt-sauro li-vivo providod within nozzlo nt ouv i-nd oi' mid hul. n suc-tion dvvii'o vomnumivntiug with tho oppmitoond ot -nid huh, montos toountvd upon nid huh for o-wilhttiug thtI mum' upon Huid orma. driving 'otmw'tioua lor opvratiug nid onvillntiug moana. nn olovutiugwnhh ionlwttod to tht' frotond of said arm.-1,a lwarihgstandard for said rahlo, and a winding-drum for said vlovnting-mhle.

Ht. ln a dri-dgn, u scoop comprising u hollow huh, n wgmontal mrtion 'xtomling from maid luth and providml with a |wrforatd fm1 und n rhumlwrvommunivatingwith uuid huh,

nu adjostnhhporforatcd plato mounted upon said perforated fave to vary tho vapacity of tho aperture` thoroof, flanges at t toppoacoop disposod lwtwot-n tho langt'a of adjuvont huhs.

2U. ln a drodgo, a sooop comprising a hollow luth, a svgmvtttal mrt ion oxtonding from laid huh and provided with a perforated foro and nchamlwroommonivuting with said huh,

an adjustahlolwrforntod platv'tiiountoil upon Witnomw:

(il-:n'rn'unr: MILLS, SHERMAN GLENN. 

